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Title: Fuel-ion diffusion in shock-driven inertial confinement fusion implosions

Abstract

The impact of fuel-ion diffusion in inertial confinement fusion implosions is assessed using nuclear reaction yield ratios and reaction histories. In T 3He-gas-filled (with trace D) shock-driven implosions, the observed TT/T 3He yield ratio is ~2× lower than expected from temperature scaling. In D 3He-gas-filled (with trace T) shock-driven implosions, the timing of the D 3He reaction history is ~50 ps earlier than those of the DT reaction histories, and average-ion hydrodynamic simulations cannot reconcile this timing difference. Both experimental observations are consistent with reduced T ions in the burn region as predicted by multi-ion diffusion theory and particle-in-cell simulations.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Università degli Studi di Roma, Roma (Italy). Dipartimento SBAI
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1566115
Alternate Identifier(s):
OSTI ID: 1544597
Report Number(s):
LA-UR-19-24138
Journal ID: ISSN 2468-080X
Grant/Contract Number:  
89233218CNA000001; NA0001857; NA0002035; NA0002905; NA0002949
Resource Type:
Accepted Manuscript
Journal Name:
Matter and Radiation at Extremes (Online)
Additional Journal Information:
Journal Name: Matter and Radiation at Extremes (Online); Journal Volume: 4; Journal Issue: 5; Journal ID: ISSN 2468-080X
Publisher:
Science and Technology Information Center, China Academy of Engineering Physics; Elsevier
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Sio, Hong, Li, Chikang, Parker, Cody E., Lahmann, Brandon, Le, Ari, Atzeni, Stefano, and Petrasso, Richard D. Fuel-ion diffusion in shock-driven inertial confinement fusion implosions. United States: N. p., 2019. Web. doi:10.1063/1.5090783.
Sio, Hong, Li, Chikang, Parker, Cody E., Lahmann, Brandon, Le, Ari, Atzeni, Stefano, & Petrasso, Richard D. Fuel-ion diffusion in shock-driven inertial confinement fusion implosions. United States. doi:10.1063/1.5090783.
Sio, Hong, Li, Chikang, Parker, Cody E., Lahmann, Brandon, Le, Ari, Atzeni, Stefano, and Petrasso, Richard D. Sun . "Fuel-ion diffusion in shock-driven inertial confinement fusion implosions". United States. doi:10.1063/1.5090783. https://www.osti.gov/servlets/purl/1566115.
@article{osti_1566115,
title = {Fuel-ion diffusion in shock-driven inertial confinement fusion implosions},
author = {Sio, Hong and Li, Chikang and Parker, Cody E. and Lahmann, Brandon and Le, Ari and Atzeni, Stefano and Petrasso, Richard D.},
abstractNote = {The impact of fuel-ion diffusion in inertial confinement fusion implosions is assessed using nuclear reaction yield ratios and reaction histories. In T3He-gas-filled (with trace D) shock-driven implosions, the observed TT/T3He yield ratio is ~2× lower than expected from temperature scaling. In D3He-gas-filled (with trace T) shock-driven implosions, the timing of the D3He reaction history is ~50 ps earlier than those of the DT reaction histories, and average-ion hydrodynamic simulations cannot reconcile this timing difference. Both experimental observations are consistent with reduced T ions in the burn region as predicted by multi-ion diffusion theory and particle-in-cell simulations.},
doi = {10.1063/1.5090783},
journal = {Matter and Radiation at Extremes (Online)},
number = 5,
volume = 4,
place = {United States},
year = {2019},
month = {9}
}

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